Where's Natasha?

Teenager Natasha Boko vanished from Heidelberg West on Monday, just three weeks before she was due to give birth to a baby boy.

Sister Anna believed Natasha may be with her boyfriend - who's not the father of her unborn child - and says all attempts to contact the missing teen have failed.

'Myself and my other little sister are really concerned,' Anna told Daily Mail Australia. 'There has been no ultrasound done for a while to even know that her baby is okay'.

The 14-year-old was last seen wearing a black jumper, black leggings and Nike shoes snd is known to regularly travel to Melbourne's CBD. She is described as being 150cm tall, of medium build with brown eyes, fair hair and a fair complexion.

If you see Natasha, please contact the Fawkner Police Station on 9355 6000.